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affine: Fix some functions in GeoM test

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This commit is contained in:
Hajime Hoshi 2018-08-02 00:42:43 +09:00
parent 67c8dff74d
commit 952292f94f
1 changed files with 9 additions and 9 deletions
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18
geom_test.go
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@ -286,7 +286,7 @@ func TestGeoMIsInvert(t *testing.T) {
}
}
func constructGeom(a, b, c, d, tx, ty float64) GeoM {
func newGeoM(a, b, c, d, tx, ty float64) GeoM {
outp := GeoM{}
outp.SetElement(0, 0, a)
outp.SetElement(0, 1, b)
@ -305,32 +305,32 @@ func TestGeomSkew(t *testing.T) {
got := input.Element(i, j)
want := expected.Element(i, j)
if want != got {
t.Errorf("Geom{}.Skew(%f, %f): got %s, want: %s", skewX, skewY, input.String(), expected.String())
t.Errorf("Skew(%f, %f): got %s, want: %s", skewX, skewY, input.String(), expected.String())
return
}
}
}
}
// skewX = 0.25
expectedX := constructGeom(1, math.Tan(0.25), math.Tan(0), 1, 0, 0)
expectedX := newGeoM(1, math.Tan(0.25), math.Tan(0), 1, 0, 0)
testSkew(0.25, 0, GeoM{}, expectedX)
// skewY = 0.25
expectedY := constructGeom(1, math.Tan(0), math.Tan(0.5), 1, 0, 0)
expectedY := newGeoM(1, math.Tan(0), math.Tan(0.5), 1, 0, 0)
testSkew(0, 0.5, GeoM{}, expectedY)
// skewX, skewY = 0.3, 0.8
expectedXY := constructGeom(1, math.Tan(0.3), math.Tan(0.8), 1, 0, 0)
expectedXY := newGeoM(1, math.Tan(0.3), math.Tan(0.8), 1, 0, 0)
testSkew(0.3, 0.8, GeoM{}, expectedXY)
// skewX, skewY = 0.4, -1.8 ; b, c = 2, 3
expectedOffDiag := constructGeom(1+3*math.Tan(0.4), 2+math.Tan(0.4), 3+math.Tan(-1.8), 1+2*math.Tan(-1.8), 0, 0)
inputOffDiag := constructGeom(1, 2, 3, 1, 0, 0)
expectedOffDiag := newGeoM(1+3*math.Tan(0.4), 2+math.Tan(0.4), 3+math.Tan(-1.8), 1+2*math.Tan(-1.8), 0, 0)
inputOffDiag := newGeoM(1, 2, 3, 1, 0, 0)
testSkew(0.4, -1.8, inputOffDiag, expectedOffDiag)
// skewX, skewY = -1.5, 1.5 ; tx, ty = 5, 6
expectedTrn := constructGeom(1, math.Tan(-1.5), math.Tan(1.5), 1, 5+math.Tan(-1.5)*6, 6+5*math.Tan(1.5))
inputTrn := constructGeom(1, 0, 0, 1, 5, 6)
expectedTrn := newGeoM(1, math.Tan(-1.5), math.Tan(1.5), 1, 5+math.Tan(-1.5)*6, 6+5*math.Tan(1.5))
inputTrn := newGeoM(1, 0, 0, 1, 5, 6)
testSkew(-1.5, 1.5, inputTrn, expectedTrn)
}